SOLUTION: How do you use the substitution method with y= 2x+3 and y=-4x+9?

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Question 668309: How do you use the substitution method with y= 2x+3 and y=-4x+9?
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
Starting with
y = 2x+3
y = 4x+9
...
Set the y values equal to each other
...
2x+3 = 4x+9
Combine like terms
2x - 4x = 9 - 3
-2x = 6
...
Divide both sides by -2
highlight_green%28x=-3%29
...
Check cartoon%28%0D%0A2%28-3%29+%2B+3+=+-6+%2B+3+=+-3%2C%0D%0A4%28-3%29+%2B+9+=+-12+%2B+9+=+-3%29
.....................
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